The Ready2Grow has a REALLY shallow front seat. I tried it with DD and she fit, but her knees were up really high when her feet were on the footrest and it just look uncomfortable since it doesn't support her legs too well.
I saw someone using the Quattro Duo in Target the other day and was surprised at how nice it looked. I didn't see it up close, so I can't speak to that, but by looks alone it earned my consideration and I came home and did some research on it.
You should consider checking out the Kolkraft Contours Options double. It's currently my fave, aside from the City Select that I can't justify spending that much money on.